linux-kernel - Re: [PATCH] change global zonelist order on NUMA v2

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Message-ID: <Pine.LNX.4.64.0704260846590.1382@schroedinger.engr.sgi.com>
Date:	Thu, 26 Apr 2007 08:48:19 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	Andi Kleen <ak@...e.de>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, akpm@...ux-foundation.org
Subject: Re: [PATCH] change global zonelist order on NUMA v2

On Thu, 26 Apr 2007, KAMEZAWA Hiroyuki wrote:

> (1)Use new zonelist ordering always and move init_task's tied cpu to a
>   cpu on the best node. 
>   Child processes will start in good nodes even if Node 0 has small memory.

How about renumbering the nodes? Node 0 is the one with no DMA memory and 
node 1 may be the one with the DMA? That would take care of things even 
without core modifications. We can start on node 0 (which hardware 1) and 
consume the required memory for boot there not impacting the node with the 
DMA memory.

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